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The World of Null-A / The Universe Maker

Ace Double D-Series: Book 31

A. E. Van Vogt

The World of Null-A

It is the year 2650 and Earth has become a world of non-Aristotelianism, or Null-A. This is the story of Gilbert Gosseyn, who lives in that future world where the Games Machine, made up of twenty-five thousand electronic brains, sets the course of people's lives. Gosseyn isn't even sure of his own identity, but realizes he has some remarkable abilities and sets out to use them to discover who has made him a pawn in an interstellar plot.

The Universe Maker

Did you ever hear of the Inter-Time Society for Psychological Adjustments? Well, neither had Morton Cargill in 1953 when he accidentally killed a girl. A year later that very girl turned up, apparently alive, and announced that the mysterious society had condemned him to death! Cargill's astounding adventures began when he escaped the execution chamber to find himself in the far future. Three conflicting societies were hunting for him, to use him in their own desperate schemes. There were the Floaters, a nation of aerial vagabonds. There were the Tweeners, who dreamed of world conquest. And finally, interwoven through everything, were the sinister figures of the Shadow Men-supermen without visible substance.

The Sword of Rhiannon / Conan the Conqueror

Ace Double D-Series: Book 36

Robert E. Howard
Leigh Brackett

The Sword of Rhiannon

Greed pulls the archaeologist Matt Carse into the forgotten tomb of the Martian god Rhiannon and plunges the unlikely hero into the Red Planet's fantastic past, when vast oceans covered the land and the legendary Sea-Kings ruled from terraced palaces of decadence and delight. Talented enough to co-write The Big Sleep film with William Faulkner and imaginative enough to pen the original screenplay for The Empire Strikes Back, Leigh Brackett is a giant in the science-fiction field, and The Sword of Rhiannon is one of her most popular adventure tales.

Conan the Conqueror

In this epic, Conan fights to recover the throne of Aquilonia from Nemedian invaders aided by the Acheronian wizard Xaltoltun.

Sentinels from Space / The Ultimate Invader and Other Science-Fiction

Ace Double D-Series: Book 44

Eric Frank Russell
Donald A. Wollheim

Sentinels from Space

A peril-packed novel by the acclaimed author of Men, Martians and Machines, the story involves an attack on Earth by both Venus and Mars -- and features sabotage squads with the ability to read thoughts, start fires by merely pointing a finger, and change their appearance to match anyone's. And now interplanetary agent David Raven is asked to outwit them all and restore peace.

The Ultimate Invader and Other Science-Fiction


  • The Ultimate Invader - (1954) - novella by Eric Frank Russell (variant of Design for Great-Day 1953)
  • Alien Envoy - (1944) - novelette by Malcolm Jameson
  • Malignant Marauder - novelette by Murray Leinster (variant of Dead City 1946)
  • The Temporal Transgressor - novelette by Frank Belknap Long (variant of Bridgehead 1944)

The Weapon Shops of Isher / Gateway to Elsewhere

Ace Double D-Series: Book 53

Murray Leinster
A. E. Van Vogt

The Weapon Shops of Isher

By the year 4784, the Empire of Isher ruled the universe and an impetuous willful girl ruled the empire. Into this epoch, the most scientifically powerful period humanity ever knew, a time-staggering bombshell was tossed. It came in the form of a man from today, a victim of a conflict which was as old as that empire and which now threatened to be the end of both Isher and its worlds.

Gateway to Elsewhere

Tony Gregg was just an ordinary everyday American until the day he came into possession of an old Barkut coin. He knew that it was more than just a collector's curio because there was no such place on any map of Earth, past or present. He learned then that it could be used as a key - a key to a GATEWAY TO ELSEWHERE.

Cosmic Manhunt / Ring Around the Sun

Ace Double D-Series: Book 61

Clifford D. Simak
L. Sprague de Camp

Cosmic Manhunt

Meet Victor Hasselborg, easily the most miserable Private Investigator in the entire galaxy. More comfortable with the dull routine of investigating insurance frauds than interstellar adventure, Hasselborg is bound by duty to chase a runaway heiress across known space to the primitive world called Krishna. Clad in kilt and sword, his hair dyed green, riding a buggy driven by a six-legged monster of a beast, Hasselborg's quest takes him through the volatile world of feudal Krishna politics and into the presence of... The Queen of Zamba.

Ring Around the Sun

Everlasting products have started to be released onto the world market and at a price that vastly undercuts their shorter lived rivals. At first the products were small - light bulbs, cigarette lighters, razor blades - but when the mysterious corporation behind these products expands and starts to produce everlasting cars, and modular houses and then clothing for ridiculously low prices, businessmen begin to see this as a deliberate attack on the world's economy.

Soon afterwards more and more people begin to see these as threats to their livelihoods and violence against these and their mysterious manufacturers begins to start.

Jay Vickers is a writer. He is approached by a businessman to write propaganda material to help traditional industries fight the infiltration of these products. But Vickers declines and sets off on his own personal quest to discover if there is any truth in a memory he has from his childhood of a kind of fairyland, and whether this has any connection to what is happening in the world.

Beyond Earth's Gates / Daybreak--2250 A.D

Ace Double D-Series: Book 69

Andre Norton
Lewis Padgett
C. L. Moore

Beyond Earth's Gates


Under Eddie Burton's management the ambitious starlet Lorna Maxwell seemed headed for the top of Broadway's glamorous world of make-believe. And then she vanished - through a wall where there was no door. Eddie found himself plunging after her into a city beyond reality.

In that weird twin city to New York, Eddie became a hunted fugitive while his girl friend turned up as an ever-present face and all-pervading voice that awed and mystified the inhabitants. And Eddie learned that between him and return to his natural home stood her new manager, a mysterious figure who ruled by a tyrannical combination of super-scientific miracle and brute force.

Daybreak--2250 A.D

Two centuries after an atomic war on earth, a silver-haired mutant sets out on a dangerous search for a lost city of the ruined civilization.

Adventures in the Far Future / Tales of Outer Space

Ace Double D-Series: Book 73

Donald A. Wollheim

Adventures in the Far Future


  • The Wind Between the Worlds - (1951) - novelette by Lester del Rey
  • Stardust - (1952) - novelette by Chad Oliver
  • Overdrive - (1953) - novelette by Murray Leinster
  • The Millionth Year - (1943) - shortstory by Martin Pearson
  • The Chapter Ends - (1954) - novelette by Poul Anderson

Tales of Outer Space


  • Doorway in the Sky - (1954) - novelette by Ralph Williams
  • Here Lie We - (1953) - novelette by Fox B. Holden
  • Operation Mercury - (1941) - novelette by Clifford D. Simak (variant of Masquerade)
  • Lord of a Thousand Suns - (1951) - novelette by Poul Anderson
  • Behind the Black Nebula - (1942) - novelette by L. Ron Hubbard (variant of The Invaders)

The Brain-Stealers / Atta

Ace Double D-Series: Book 79

Francis Rufus Bellamy
Murray Leinster

The Brain-Stealers

Strange exiles were landing throughout the night... exiles from the unknown depths of outer space -- seeking human beings for food!


A microscopic man fights for survival in a world of ants...

When Brokell awoke, e was less than half an inch tall. Suddenly his apple orchard had become an exotic landscape, and the insects in it terrifying monsters. Helpless, without food or weapons, Brokell faced certain death-but for the friendship of the ant called ATTA.

An Earth Gone Mad / The Rebellious Stars

Ace Double D-Series: Book 84

Roger Dee
Isaac Asimov

An Earth Gone Mad

Was this the end of mankind?

The cubes meant peace--but was it to be the peace of the grave?

While he was shipwrecked on a distant Jovian moon, with only a cryptic monster for a companion, Paul Shannon had longed for the laughter and friendship of men and women. But when at long last he brought is repaired space craft back to the familiar skies of North America, he was shocked to find AN EARTH GONE MAD.

Men's ambitions, women's love, and the eternal clash of wills, had all given way to the passive docility of stunned beasts. A new cult, born in the stars, was sweeping the world, promising glory but bringing only complete mental submission. And Shannon was torn between unwilling belief and panicky horror as he realized that he himself held the only key to that cosmic riddle.

The Rebellious Stars (title variant of The Stars, Like Dust)

Key man in a galactic explosion!

The Earth had been made hopelessly radioactive and useless by atomic warfare, but young Biron Farrill, a student in the University of Earth, nevertheless found himself involved in a struggle that was worse because of the mystery in it. His father, on another planet, had been murdered and the young man himself was marked for violent death.

The only certainty was that his pursuers, who identities were unknown to him, were agents of would-be conquerors of everything and everybody in the galaxy. But young Farrill had to find out why he and his father had been marked for destruction.

One Against Eternity / The Other Side of Here

Ace Double D-Series: Book 94

Murray Leinster
A. E. Van Vogt

One Against Eternity

Did their world rest on a pariah's shoulders? Robert Hedrock had been declared a kill-on-sight outcast, even by those who had once been his own faction. Neither they not their empress foe suspected that he alone could provide the solution to their deadliest cosmic crisis.

The Other Side of Here

A flick of the wrist - and whole cities plunged into a void of lifelessness. Steve Waldron plunged to the very center of a dead city and gaped at a truth he could not believe. What could he do against so fearsome a force that threatened to engulf the whole nation?

The Last Planet / A Man Obsessed

Ace Double D-Series: Book 96

Andre Norton
Alan E. Nourse

The Last Planet is the first paperback edition of the novel originally (and subsequently) published as Star Rangers. A starship from a decaying Galactic empire, with a mixed human-alien crew, is exploring the outer fringes of the Milky Way. A crash-landing on an apparently empty planet marks the end of the voyage. With no hope of repairing the vessel, the surviving crewmen must plan their future, allot their resources, and explore all avenues for a new life on this world.

A Man Obsessed is the story of a vengeance hunt in a nightmarish future when all medical practice is firmly in the control of the Government. It's both a psychological tale of a man deteriorating from the effects of dedicating his life to a (perhaps) foolish pursuit of one man, and a not-so-pretty look at the ultimate results of a socialized medicine policy.

Conquest of the Space Sea / The Galactic Breed

Ace Double D-Series: Book 99

Leigh Brackett
Robert Moore Williams

Conquest of the Space Sea

Beyond Pluto they faced a challenge no man could overcome.

The Galactic Breed

Outcast in space. Michael Trehearne had always been an outcast among his people on Earth. He knew he was different. He did not know how or why. Then one day, on the wind-swept coast of Brittany, a bewitchingly beautiful girl appeared & told him he had the look of the Vardda--those elite star travelers who alone could withstand the rigors of intergalactic flight.

Michael had to join them, had to find his place in the universe at last. But it would not be easy. For even when they allowed him to risk his life aboard their ship, to seal his fate upon their planet, even then, they viewed him as an outcast, a dangerous changeling who suddenly threatened them. He was a man who sooner or later would have to be destroyed!

Solar Lottery / The Big Jump

Ace Double D-Series: Book 103

Philip K. Dick
Leigh Brackett

Solar Lottery

The operating principle was random selection: positions of public power were decided by a sophisticated lottery. Everyone had a chance, everyone could live in hope that they would be chosen to be the boss, the Quizmaster. But with the power came the game - the assassination game - which everyone could watch on TV. Would the new man be good enough to avoid his chosen killer? Which made for fascinating and exciting viewing, compelling enough to distract the public's attention while the Big Five industrial complexes run the world, the solar system and the people, unnoticed and completely unopposed. Then, in 2203, with the choice of a member of a maverick cult as Quizmaster, the system developed a little hitch...

The Big Jump

All signs pointed to the fact that no human could come back alive from Barnard's Star. Something elusive, beyond comprehension, existed out there; something that was a perpetual bait, a perpetual trap. But Arch Comyn knew he had to join tht second fated mission. For somehwere beyond the veil of the Transuranae lay the answer to the question that was more important than life to him.

The 1000 Year Plan / No World of Their Own

Ace Double D-Series: Book 110

Poul Anderson
Isaac Asimov

The 1000 Year Plan

Title variant of Isaac Asimov's novel Foundation (1951).

No World of Their Own

Space explorers returning to an unrecognizable Earth after five millennia away find themselves caught up in a deadly political power game on a planet racing toward intergalactic war.

One in 300 / The Transposed Man

Ace Double D-Series: Book 113

Dwight V. Swain
J. T. McIntosh

One in Three Hundred

ONE IN 300 is the precentage of Earthmen scheduled to survive the coming catastrophe: The sun is about to heat up and destroy Earth, and our technology will allow 1/300th of the population to be transported to Mars, where civilization can, hopefully, be rebuilt. How would YOU select those who are to survive?

The Transposed Man

HE WAS A FUTURISTIC OO7! He stole men's bodies to betray their minds. No matter where he was, and no matter whose body he happened to be inhabiting, the traitor in his heart stayed right with him. A dictatorship ruled the solar system, but the Society of Mechanists dreamed of the perfect world that would result if science and logic, not politics, called the shots.

Operator Forty-four was the Society's top secret agent, a man who could change bodies whenever pursuit began breathing down his neck. General Aneido, head of the government's Secret Service, never knew when such an enemy might be walking among Earth's billions, perhaps, in the body of the general's own best friend. Then Forty-four was assigned to steal the secret of a new invention from the woman he had once loved. That was bad enough, for their love suddenly rekindles. Then, what he actually discovered made him wonder if he was really on the right side? Suddenly both the general's Secret Service and the Society of Mechanists were after Forty-four.

Can even an invisible secret agent survive when he is surrounded on all sides? His only hope lay in two women: one who hated him and one who was unreliable!

The Paradox Men / Dome Around America

Ace Double D-Series: Book 118

Charles L. Harness
Jack Williamson

The Paradox Men

Set after the Third Great War, North and South America are united into one country: Imperial America. A slave state run by a small noble elite who flaunt their wealth by using, and abusing, the one commodity that only the rich can have: human labour. But working underground, persecuted by the police, is an organization dedicated to the overthrow of government and the existing way of life and the establishment of freedom.

The Society of Thieves was the only organization that flouted authority in America Imperial: they robbed the rich to buy freedom for the slaves. They were well equipped and trained for their job and had friends and informers in high places ready to reveal where the wealth of the nobles was hidden. And Alar was the best Thief of them all - for he had senses not found in ordinary men, senses that accurately warned him when danger was near. But Alar had amnesia and did not know his true identity though sometimes he sensed that there was a purpose in his actions that was not entirely his own volition.

When Keiris, wife of the Imperial Chancellor saw him, she sensed that he was something special and helped him to elude pursuit even though it put her own life in danger. And in trips to the Moon and even the Sun itself, Alar begins to see what part he is destined to play in the struggle for men's freedom.

Dome Around America

What new menace was besieging mankind's last refuge?

The Earth had been stripped bare of the atmosphere and water, its surface left an airless and lifeless desert...except for America. A dome of energy had been erected around the U.S. in the nick of time and only within this vast transparent dome could men and women live in safety. Until the moment Barry Thane spotted a moving thing outside the dome!

Something was there where only Death reigned. Something that was spying on the dome, trying to break in and destroy Earth's last oasis! But what was it...and why?

Barry's single-handed struggle with the unknown, his own break-out into the outside world of airless terror, makes one of the most exciting novels that Jack Williamson, master of science fiction, has ever written.

The Stars Are Ours! / Three Faces of Time

Ace Double D-Series: Book 121

Andre Norton
Sam Merwin, Jr.

The Stars Are Ours!

Dard Nordis grew up in a world that had been devastated by atomic catastrophe. The remnants of humanity had set up an iron dictatorship to hunt out and destroy the last free bands of scientists, hiding in mountains and caves. And the day came when Dard's secret laboratory home was raided - and he escaped by the skin of his teeth.

Where else could men go to keep the torch of liberty and knowlkedge burning? Dard's martyred brother had given him a key to that unknown haven, but how could dard learn to use it? Where were the engineers and their spaceships hidden?

Three Faces of Time

Elspeth Marriner, once an ace journalist, is now a Time Watcher working from the mysterious House of Many Worlds. On some parallel time-tracks, Earth's cultures lag thousands of years behind our own. On others, science is far in advance of ours. As a Watcher, Elspeth's job is to keep advanced Earths that had discovered the existence of their parallel sisters from invading and exploiting those that were less advanced. Now the Watchers have discovered that the power-hungry dictator of one far-advanced civilization, having devastated his own Earth, has already infiltrated a parallel Earth still in the age of the Roman Empire, and is seeking to conquer it! Though chariots roll through the streets, and men with swords guard the cities, flying tanks and atomic artillery are gathering in secret behind the walls!

Alien from Arcturus / Atom Curtain

Ace Double D-Series: Book 139

Gordon R. Dickson

Alien from Arcturus

Ever since Earth's first starship crept out on sub-light drive a hundred years ago and was met by an emissary of the Galactic Federation, man has lived as a prisoner in the solar system. The Federation decreed that unless man could demonstrate his technological maturity and leave the solar system via a faster-than-light drive, he would not leave it at all.

All Earth knows the test that man must pass to win Galactic Citizenship and the freedom of the stars; the FTL Drive is every physicist's top priority. But what they cannot know is that they work against both an alien time-limit and human sabotage--and time is running out. Unless John Parent's star-drive project is successful, mankind will remain trapped in the solar system, forever...

Atom Curtain

He broke the barrier to a continent in exile. For two hundred and seventy years America had been totally cut off from the rest of the world by an impenetrable wall of raging atomic fury. To the frightened countries of the Old World, what had once been the greatest of all powers was now the most fearful of all mysteries. No man ached to know what lay behind that frightful barrier more than Emmett O'Hara, restless air-sentinel of the International Patrol--whose American ancestors had been stranded in Britain the day the Atom Curtain was raised. Then, on December 20, in the year 2230, while on routine patrol, O'Hara did the impossible. He broke through the barrier--and lived!

Contraband Rocket / The Forgotten Planet

Ace Double D-Series: Book 146

Lee Correy
Murray Leinster

Contraband Rocket

To the Moon - or Bust!

The Forgotten Planet

THE FORGOTTEN PLANET is a world where the Terraforming stopped too soon. Result: insects evolved to human size plus. Non-chlorophyll plants also prospered and killed off the trees and grasses, then evolved into hugeness themselves. You would not expect a shipload of people stranded on such a world to survive, but humans are stubborn and resourceful. This is the story of their many-times descendants, and it's a great one.

The World Jones Made / Agent of the Unknown

Ace Double D-Series: Book 150

Margaret St. Clair
Philip K. Dick

The World Jones Made

Floyd Jones is sullen, ungainly, and quite possibly mad, but in a very short time he will rise from telling fortunes at a mutant carnival to convulsing an entire planet. For although Jones has the power to see the future -- a power that makes his life a torment -- his real gift lies elsewhere: in his ability to make people dream again in a world where dreaming has been made illegal, even when the dream is indistinguishable from a nightmare.

In Philip K. Dick's unsettling chronicle of the rise and fall of a postnuclear messiah, readers will find a novel that is as minutely realistic as it is prophetic. For along with its engineered mutants, hermaphroditic sex performers, and protoplasmic drifters from the stars, The World Jones Made gives us nothing less than a deadly accurate reading of our own hunger for belief.

Agent of the Unknown

Don Haig had been content to lie around and drink in the synthetic beauty of the pleasure planetoid Fyon, until a woman came into his life. A woman more beautiful and more perfect than any other female in the galaxy. A woman who brought about a curious change in Don.

For she was a pocket-sized doll -- a very strange and miraculous puppet who shed constant tears and held powers that Don never even dreamed of.

But what Don did know was that dangerous alien forces were swiftly focussing on him and his living puppet... and that he had to discover the doll's super-scientific secret before his own life was smashed to atoms!

The Man Who Lived Forever / The Mars Monopoly

Ace Double D-Series: Book 162

Anna Hunger
R. DeWitt Miller
Jerry Sohl

The Man Who Lived Forever

His first thousand years were the easiest.

The Mars Monopoly

Find your fortune in the sky - by permission of the Mars monopoly.

The Crossroads of Time / Mankind on the Run

Ace Double D-Series: Book 164

Gordon R. Dickson
Andre Norton

The Crossroads of Time

Anothe instalment of Blake Walker's adventures on alternate Earths. Blake, a 1950s citizen of our own Earth is accidentally caught up in the chase for a telepathic psychopath who is looking for an alternate Earth to rule.

Mankind on the Run

Kil and Ellen Bruner were Class-A citizens, labelled as privileged and stable by the Key that every man, woman and child wore in the well-ordered world created after the Lucky War. Then Ellen vanished, and suddenly all Kil's privilege isn't enough to bring her back to him. The layers of intrigue he is able to unwrap show him only the beginning of a great plot against established society--a plot that somehow involves Ellen.

For the first time he feels doors closing around him, hears the official silence of the World Police, feels the great weight of authority's disapproval, and learns what it means to be a man alone. His desperate search for his wife will cost him everything he thought he believed in as he digs ever deeper into the ugly reality behind the façade of his world's peace and security, and finds himself at last.

The Man Who Mastered Time / Overlords From Space

Ace Double D-Series: Book 173

Ray Cummings
Joseph E. Kelleam

The Man Who Mastered Time

It took what seemed but half a day's traveling to traverse the 28,000 years that separated Loto Rogers from the most beautiful girl he had ever seen. He had expected to find mighty cities and a flowering civilization in that future world, but instead he found only ice and snow--and Azeela.

Overlords From Space

They sought the secret of life on Earth.

The Green Queen / Three Thousand Years

Ace Double D-Series: Book 176

Margaret St. Clair
Thomas Calvert McClary

The Green Queen

His atomic puppet was out of control!

Bonnar had created the Green Queen thoughtlessly--all part of a day's work. But when his brain-child became a full-grown Frankenstein, a monster embodied in the girl he loved, Bonnar was terrified. For now she threatened to shatter the whole carefully balanced social structure of Viridis--as well to undermine the radioactive world's atomic shield!

Only Bonnar could end the holocaust and turn the all-too-grim reality back to the illusion he had originally intended. But to do that he had to destroy the girl he loved--or be destroyed by her.

Original title: Mistress of Viridis (Universe Science Fiction, March 1955)

Three Thousand Years

They slept for thirty centuries.

Originally serialized in the magazine Astounding in 1938.

The Man Who Japed / The Space-Born

Ace Double D-Series: Book 193

Philip K. Dick
E. C. Tubb

The Man Who Japed

The Man Who Japed is Dick's mesmerizing and terrifying tale of a society so eager for order that it will sacrifice anything, including its freedom. Newer York is a post-holocaust city governed by the laws of an oppressively rigid morality. Highly mobile and miniature robots monitor the behavior of every citizen, and the slightest transgression can spell personal doom. Allen Purcell is one of the few people who has the capacity to literally change the way of the world, and once he's offered a high-profile job that acts as guardian of public ethics, he sets out to do precisely that. But first he must deal with the head in his closet.

The Space-Born

Far from Earth, on a ship carrying the 13th and 14th generations of descendants from the original crew, life is short. You are born, learn the tasks needed to keep the ship running, help breed and train the next crew - and your death is ordered by the computer in charge.

Gregson, chief of the psych-police, makes sure the computer's death-sentences are carried out quickly and painlessly. His duty is a sacred trust. He knows the intricacies of the system, how it works... and how it can be subverted.

He is growing old. Rebellious.

He also knows his name will soon come up in the computer for elimination.

And he has no intention of carrying out his own death-sentence!

Planet of No Return / Star Guard

Ace Double D-Series: Book 199

Andre Norton
Poul Anderson

Planet of No Return

For many years the starships of earth searched the heavens for places where men could live. Many planets were found, but always something was wrong: too hot; too cold; atmospheric contaminants; poisonous biochemistry; intelligent natives - something. At last a deep-space survey vessel has reported a planet that seems perfect, an uninhabited paradise where people can roam free. But the first Troas Expedition never returns. And now the crew of the De Gama must find out why or mankind will lose the stars forever.

Star Guard

Worlds and cons away are the adventures of Kana Karr, Swordsman Third Class, who goes to the planet Fronn with Yorke Horde in the 5th millenium A.D.-Terran figuring. Earth, or Terra, under a despotic and all powerful Central Control has developed a system of professional fighting men, which it sends out for needed patrol duty in other solar systems. For his first assignment Kana, who is one of these soldiers, is sent out as part of a patrol to quell an uprising between two humanoid factions on forbidding Fronn. The adventures that follow are protracted and typical of Andre Norton's well developed sets of fantastic circumstances and they result in Kang's initiation to the coterie of Terrans who are breaking away from Central Control and seeking freedom to pioneer on their own on other planets.

The Earth in Peril / Who Speaks of Conquest?

Ace Double D-Series: Book 205

Donald A. Wollheim
Lan Wright

The Earth in Peril


  • Things Pass By - (1945) - novelette by Murray Leinster
  • Letter from the Stars - (1950) - shortstory by A. E. van Vogt (variant of Dear Pen Pal 1949)
  • The Silly Season - (1950) - shortstory by C. M. Kornbluth
  • The Plant Revolt - (1930) - novelette by Edmond Hamilton
  • Mary Anonymous - (1954) - shortstory by Bryce Walton
  • The Star - (1897) - shortstory by H. G. Wells

Who Speaks of Conquest?

Earth faced a choice between eventual colonization at the hands of a ruthless aggressor or immediate action against the whole galaxy! And Stephen Brady, Commander of the Terran forces, was the man to make that decision of cosmic importance.

Behind the immediate enemy--the Centaurans--the diabolical Rihnans ruled with unchallenged might, backed by the most advanced psychological and technological weapons. To attack now would be the greatest challenge the Earth would ever have to meet!

The odds were deadly, but Brady knew that if he would not speak now for conquest, he--and all Earth--might remain silent in defeat for all eternity!

Three to Conquer / Doomsday Eve

Ace Double D-Series: Book 215

Eric Frank Russell
Robert Moore Williams

Three to Conquer

It's the day-after-tomorrow in the USA. Wade Harper is a telepath, as far as he knows the only one in existence. He has managed to keep his paranormal abilities concealed, sure in the knowledge that his beloved government will try anything, including vivisection, to attempt to learn the source of his power. Until a chance encounter reveals to Harper that alien beings have invaded Earth --- and no one else on the planet can possibly detect them! Can he battle the menace without giving up his treasured secrecy?

Doomsday Eve

Williams' apocalyptic future is an Earth which has been at war for half-a-century, with just enough use of atomics to destroy cities and industries, but not enough to wipe out the planet--yet.

Stories are circulating in North America about strange people who seem to have even stranger abilites. Naturally the war government wants to find these people, if they exist, and conscript them. With manpower at a premium, a single intelligence agent, Kurt Zen, is sent to run down the rumors. To his astonishment, he discovers that every one of the far-fetched rumors was true, and that this band of "new people" represents normal humanity's only prayer for survival!

The 13th Immortal / This Fortress World

Ace Double D-Series: Book 223

James E. Gunn
Robert Silverberg

The 13th Immortal

Who was your father the mutant asked Dale Kesley. And try as he might, Kesley could not remember; his past was an utter blank. But he knew one thing - the answer to his life's riddle lay in Antarctica, the once-frozen continent, now an earthly paradise surrounded by an impenetrable barrier. But how to get there?

The only means of transportation were the spindly six-legged mutant horses. And it was suicide for Kesley to travel on the American continents. Two immortal dictators had set king-size rewards for his capture - dead or alive! But somewhere in the two continents there was someone who would help him, someone he had to find. The future of the world depended on his success.

This Fortress World

William Dane is a man with a nasty but valuable secret, one that all the cutthroats in the galaxy are itching to get their hands on. Dane must perfect the art of concealing himself from the crazed factions yearning for the power that this secret can give.

Gunner Cade / Crisis in 2140

Ace Double D-Series: Book 227

Cyril Judd
H. Beam Piper
John J. McGuire

Gunner Cade

The Emperor had no more devoted Armsman than Gunner Cade. In this warped civilization of murder and death, Cade fought as he was expected to, killed as he was expected to, destroying enemy after enemy until he himself was shot down in honorable battle.

But Cade did not die. After weeks of unconsciousness, he awoke to find he was a fugitive, the object of a world-wide manhunt. Why was it so important to silence him? What undiscovered secret did he possess as he desperately fled over the earth and into outer space?

Crisis in 2140

Black market in forbidden knowlegde.

Master of Life and Death / The Secret Visitors

Ace Double D-Series: Book 237

Robert Silverberg
James White

Master of Life and Death

Global overcrowding, a new immortality serum and an unfriendly alien ambassador are only a few of the problems confronting Roy Walton, government's new Master of Life and Death in Robert Silverberg's early and accomplished novel. Praised by a distinguished critic, Anthony Boucher, for "its complete clarity and narrative drive" the novel retains its power today.

The Secret Visitors

When the World Security Organization asked Doctor Lockhart to treat their mysterious prisoner, they hadn't known that the dying old man would reply to their questions in a totally unknown language. They had expected the stranger to reveal something about the world war which seemed imminent. But they had been thinking in terms of foreign spies - not alien beings!

Now suddenly they found themselves confronted with a Gargantuan task. They had to find a way to another world, a means of communicating with creatures they could barely imagine.

They had to stop a war which was originating in the farthest stars - or else surrender the Earth unconditionally to THE SECRET VISITORS.

Empire of the Atom / Space Station # 1

Ace Double D-Series: Book 242

Frank Belknap Long
A. E. Van Vogt

Empire of the Atom

Atomic War had destroyed the world. History and records had been lost; the few war-shocked people who were left could not even recall what had started the destruction. But even these desperate circumstances could not change the basic nature of man.

Out of the still-smoking ruins came one who was stronger and more ruthless than the rest. From his plans to rule the universe grew the seeds of the last great war of all, the one that would finally wipe man off the face of Earth.

Space Station # 1

The Space Station floated up out of the Big Dark. Lieutenant Corriston had come to see its marvels, but he soon found himself trapped in unexpected terrors.

The grim reality was that an unknown, unsuspected outer space power had usurped control of the artificial moon. A beautiful woman had disappeared; passengers were being fleeced and enslaved; and, using fantastic disguises, imposters from - SOMEWHERE - were using the station for their own mysterious ends.

The Cosmic Puppets / Sargasso of Space

Ace Double D-Series: Book 249

Philip K. Dick
Andrew North

The Cosmic Puppets

Yielding to a compulsion he can't explain, Ted Barton interrupts his vacation in order to visit the town of his birth, Millgate, Virginia. But upon entering the sleepy, isolated little hamlet, Ted is distraught to find that the place bears no resemblance to the one he left behind--and never did. He also discovers that in this Millgate Ted Barton died of scarlet fever when he was nine years old. Perhaps even more troubling is the fact that it is literally impossible to escape. Unable to leave, Ted struggles to find the reason for such disturbing incongruities, but before long, he finds himself in the midst of a struggle between good and evil that stretches far beyond the confines of the valley.

Sargasso of Space

Almost half a century ago, renowned science fiction and fantasy author Andre Norton introduced apprentice cargo master Dane Thorson in Sargasso of Space and Plague Ship.

Dane signed on with the independent cargo ship Solar Queen looking for a career in off-world trade.

In Sargasso of Space, the Solar Queen free traders win exclusive rights to trade with the planet Limbo, but the crew arrives to find most of the planet's surface charred, with little signs of life. They find a valley with life, but others may still lurk. Worse yet, a strange force threatens to cripple the Queen. They must solve the planet's mysteries if they hope to escape not only with tradeable goods, but their lives.

City Under the Sea / Star Ways

Ace Double D-Series: Book 255

Poul Anderson
Kenneth Bulmer

City Under the Sea

Jeremy Dodge knew the Earth would face starvation if it were not for the new science of "aquaculture". With the world's population numbering many billions, only the extra food being cultivated on the bottom of the sea could feed everyone.

But, like the rest of the surface-dwellers, Jeremy did not know what a vicious monopoly underwater cultivation had become. That is, until the dreadful moment when he himself was kidnapped and dragged beneath the depths.

And there he was to learn that just making his own escape would not be enough - he would have to save mankind from the tyranny of a new race of water-breathing human monsters!

Star Ways

They called themselves The Nomads. Unplanned by-products of the chaotic explosion of humankind into space, they had evolved for themselves a way of life similar to that of the gypsies of ancient Earth--except that their gypsy wagons were mighty starships, each a self-contained world that housed a clan of many thousands.

It was a hard life, but the only one the nomads knew, or wanted. But someone, or something, did not want them to have it; one by one the nomad starships were disappearing without a trace--and it fell to Joachim, Captain of the Starship Peregrine, to find out why...

The Mechanical Monarch / Twice Upon a Time

Ace Double D-Series: Book 266

Charles L. Fontenay
E. C. Tubb

The Mechanical Monarch

One extra man could unbalance the regulated world.

Twice Upon a Time

With one moment to live, he still had a lifetime to spare.

Men on the Moon / City on the Moon

Ace Double D-Series: Book 277

Murray Leinster
Donald A. Wollheim

Men on the Moon

An anthology of short stories about the future of mankind on the moon. Stories include:

  • Operation Pumice, by Raymond Z. Gallun
  • Jetsam, by A. Bertram Chandler
  • Reluctant Heroes, by Frank M. Robinson
  • Moonwalk, by H.B. Fyfe
  • Keyhole, by Murray Leinster

City on the Moon

Life on the moon under anything less than optimal conditions had always been a nightmare, and as Joe Kenmore and his colleague, Moreau, drove back to the City On The Moon on that day the Earth shuttle was due to land, the nearby mountain supporting critical elements of the shuttle's landing mechanisms crumbled causing an avalanche and resulting in chaos. Optimal conditions were no where in sight that day and as Kenmore and Moreau's investigations lead to their conclusion that explosions had been responsible for the avalanche.

Now they realized that they were in a race against the clock to restore the landing beam before the shuttle had reached it's point of no return prior to landing. Kenmore had more than strictly humanitarian reasons for wanting to prevent a mishap aboard the shuttle that day, because on this particular mission, Arlene Gray was aboard. Kenmore had been anxiously awaiting her arrival, and while in the scope of things Kenmore's comparatively meaningless love life might hang in the balance...

City On The Moon is also published as a stand alone novel.

Across Time / Invaders From Earth

Ace Double D-Series: Book 286

Robert Silverberg
David Grinnell

Across Time

Chasing mysterious celestial phenomena was part of Zack's air force duties, so it wasn't strange that he was assigned in his brother's experiment.

Invaders From Earth

Genocide on a small planet

Vital radioactive minerals are found on the tiny planet of Ganymede. It looks like a bonanza for Earth, but massacre for the peaceful, harmless aliens who live there. So there's going to be an advertising campaign on Earth to cover up the systematic harrasment and destruction of this wise and simple people.

Just to dig up a few minerals.

Ted Kennedy's a small wheel in the massive propaganda machine. But he's sick of all the pitiless killing of the vulnerable Gannies. So he's out to stop the genocide that will make Men the space gangsters, the supervandals, the Invaders from Earth.

Lest We Forget Thee, Earth / People Minus X

Ace Double D-Series: Book 291

Raymond Z. Gallun
Calvin M. Knox

People Minus X

But were they really human...? That was the question everyone was asking. It was an astonishing scientific achievement, one that mankind had passionately wanted for centuries--a process that restored life and wholeness to victims of disaster. This amazing new process was based partly on scientific records, partly on memories of those who knew the deceased.

Unfortunately, this new discovery had a small, fatal flaw. The restored people were the exact physical duplicates of their former selves. However, they seemed to lack an indefinable human quality--perhaps it was a soul or divine spark. Yet, they were physically and intellectually superior not only to their original incarnations but to their human creators as well! As time went by, the artificial people gravitated toward one another--they married, reproduced. Even their children were recognizable in an uncanny way as being apart from "normal" people.

As the number of new people grew, the rest of Earth's population drew away from them, and soon sprang fear and hatred between these two camps of humanity, with an ugly showdown seemingly inevitable...

Lest We Forget Thee, Earth

A hundred thousand years ago, there had been a planet called Earth. It had been a proud world ruling a thousand vassal stars, but its stellar empire had turned upon and annihilated their conquerors, and wiped the name of Earth from the maps of space.

But Earthmen still survived... a strange race of worldless men and women, by tradition advisers to rulers, but never themselves ruling. Wanderers through myriad planets, their origin was a half-forgotten legend.

That was the situation when a strange quirk of fate sent Earthman Hallam Navarre on an interstellar wild goose chase. He had to bring back a strictly mythical treasure to his alien ruler, or die.

Big Planet / Slaves of the Klau

Ace Double D-Series: Book 295

Jack Vance

Big Planet

Charley Lysidder, the Bajarnum of Beaujolais was ruthlessly expanding his empire on the Big Planet. The objectives of the mission from Earth was to stop him and ensure that the whole world didn't fall under the domination of the tyrant.

But when sabotage forced the spacecraft carrying the mission crashlanded, the priority changed. The survivors faced an epic 40,000 mile trek to safety, across the vast and unknown surface of the planet, harassed by monsters, the native people and the agents of the Bajarnum, and riven by their own deadly disputes.

Slaves of the Klau

Roy Barch is taken slave by the Klau, along with the golden Lekthwan, Komeitk Lelianr. On the industrialized world Magarak, the Klau hunt Barch and others for recreation. Barch refuses to fall prey--and fights a grim battle to return to Earth.

Star Born / A Planet for Texans

Ace Double D-Series: Book 299

Andre Norton
H. Beam Piper
John J. McGuire

Star Born

When Raf Kurbi's Terran spaceship burst into unexplored skies of the far planet Astra and was immediately made welcome by the natives of a once-mighty metropolis, Kurbal was unaware of three vital things:

One was that Astra already harbored an Earth colony--descended from refugees from the worl of the previous century.

Two was that these men and women were facing the greatest danger of their existence from a new outburst of inhuman fiends who had once tyrannized Astra.

Three was that the natives who were buying Kurbi's science know-how were those very fiends--and their intentions were implacably deadly for all humans, whether Earth born or STAR BORN.

A Planet for Texans

When the whole ornery state of Texas took off for a new planet more to their liking, New Texas was the result: a rough-and-tumble world where everyone packs a gun and it's legal to shoot politicians (if they deserve it)! But now these rugged and independent space pioneers are the targets of an expansive race of aliens. Is the Solar League's new ambassador tough enough to steer them back to Earth's embrace

The Snows of Ganymede / War of the Wing-Men

Ace Double D-Series: Book 303

Poul Anderson

The Snows of Ganymede

When the Order of Planetary Engineers sent Hall Davenant to Ganymede for a terraforming survey, they knew that the job on the airless, frigid Jovian moon would be tough. Changing it to resemble Earth - with fertile land, water and good air - was the biggest and most important planet conversion job ever attempted by the Engineers. But they hadn't counted on the already too Earthlike behaviour of the Ganymede colonists, who had never altered the ancient Earth-born habits of intrigue, bigotry and double-dyed treachery!

War of the Wing-Men

Three Terrans crash on a planet whose food is poison to them. They have to get to the other side of the planet where a Terran base camp can feed them. Unfortunately they get embroiled in a war between rival tribes of wing-men. van Rijn uses his wits to manipulate the situation to his own benefit and brings about a truce.

Stepsons of Terra / A Man Called Destiny

Ace Double D-Series: Book 311

Lan Wright
Robert Silverberg

Stepsons of Terra

What do you do when your planet is under threat from aliens, you have travelled light years to make contact with Earth (after 500 years of silence) and you then find no-one cares? A classic novel by the Hugo and Nebula award winner.

A Man Called Destiny

Suddenly he became the most valuable human in space.

The Space Willies / Six Worlds Yonder

Ace Double D-Series: Book 315

Eric Frank Russell

Six Worlds Yonder

Stories in this collection:

  • The Waitabits
  • Tieline
  • Top Secret
  • Nothing New
  • Into Your Tent I'll Creep
  • Diabologic

The Space Willies

An Earthman's tongue is his deadliest weapon

There was a common understanding in the Space Navy that scout-pilots were a breed apart--cocksure, reckless, and slightly nuts. But it was also understood that when a really dangerous job had to be done, a scout-pilot was the man to do it.

So for John Leeming, a couple of months of dodging death in a one-man ship, zipping in and out of the enemy Combine's rearguard, was just another one of those jobs. And there was no man in the Universe more surprised than Leeming when his heretofore indestructible ship just gave up the ghost smack in the middle of a Combine-held prison planet!

It was then that the spirit of the Scout Corps had its chance to shine. With self-confidence as his only weapon, Leeming had only two choices: give in to the enemy and be captured...or quick-talk them into a real case of THE SPACE WILLIES!

The Void Beyond and Other Stories / The Blue Atom

Ace Double D-Series: Book 322

Robert Moore Williams

The Void Beyond and Other Stories


  • The Void Beyond
  • Refuge for Tonight
  • The Challenge
  • The Weapon
  • The Stubborn Men
  • The Final Frontier

The Blue Atom

Who controls it, controls all.

Beyond the Vanishing Point / The Secret of Zi

Ace Double D-Series: Book 331

Kenneth Bulmer
Ray Cummings

Beyond the Vanishing Point


When George Randolph first caught sight of Orena, he was astounded by its gleaming perfection. Here were hills and valleys, lakes and streams, glowing with the light of the most precious of metals. And, more astonishing than that, it was a world of miniature perfection--an infinitely tiny universe within a golden atom!

But for Randolph it was also a world aglow with danger. Somewhere in its tiny vastness were the friends he had to rescue. Captives of a madman, they had been reduced to native Orena size; to return to Earth, they needed the growth capsules Randolph was bringing them. It was up to Randolph to find them--and quickly--for the longer they stayed tiny, the closer they came to passing BEYOND THE VANISHING POINT!

The Secret of Zi

For something like two hundred and fifty years Earth had been dominated by humanoid aliens from the star world of Alishang. But man's spirit refused to be conquered. There was a world-wide underground planning for the day of final liberation. And there were four leaders who knew the secret that would guarantee victory - the secret of Zi.

Rupert Clinton, intelligence man for this underground, was not one of those four; yet somewhere deep in the recesses of his subconscious mind, he knew Zi's secret.

Threshold of Eternity / The War of Two Worlds

Ace Double D-Series: Book 335

Poul Anderson
John Brunner

Threshold of Eternity

Because of a twist in the structure of Time, three strangers were brought unexpectedly together: Red Hawkins of California, Chantal Vareze of London and a man from the 41st Century. Their meeting seemed an impossible prank of a universe gone mad - but it turned out to be quite otherwise.

For it seemed there was a war going on throughout space and time. A war fought by men of different epochs, on planets of different cultures, but for a cause that all could acknowledge - the very continued existence of creation itself.

And the coming together of these three very unlikely people - a modern man, a lovely girl and a futurian soldier - was to prove the master stroke of a super-science strategy that had already brought humanity to the THRESHOLD OF ETERNITY.

The War of Two Worlds

The twenty-year Earth-Mars war was finally over. What was left of Earth - its crumbled cities, its ruined farmlands - were firmly and completely under the rule of the Martian Archon. And this powerful planetary ruler was taking no chances: he intended to reduce the Terrans to a society of primitive agricultural tribes in less than a generation!

But for David Arnfeld, ex-spaceman and Earth Base Commander, there was something in the whole set-up which did not ring true. Why had both sides muffed countless chances to end that awful war in the first year or two? And why had the two planets gone to war in the first place?

In the back of Arnfeld's mind an idea was growing...perhaps there was yet a chance to save the doomed population of Earth. But if his idea was true, and proof was available, he had to work fast. Too many people were involved in this War of the Two Worlds to let one man upset their plans.

Plague Ship / Voodoo Planet

Ace Double D-Series: Book 345

Andrew North

Table of Contents:

  • Plague Ship - (1956) - novel
  • Voodoo Planet - (1959) - novella

Starhaven / The Sun Smasher

Ace Double D-Series: Book 351

Edmond Hamilton
Ivar Jorgenson


Johnny Mantell, beachcomber and broke bum, is blamed for the accidental death of a tourist. Seeing no better alternative, he steals a Star Patrol ship and flies to Starhaven, an artificial planet made to protect pirates, murderers, and villains of all kinds: an anarchic planet free of social mores and constraints.

The Sun Smasher

"It can't be true! It must be some kind of hoax!"

These are the words that go spinning through Neil Banning's mind when the Greenville authorities tell him that the house he had grown up in, the aunt and uncle who had raised him, never existed. Soon Banning finds himself in jail, charged with disturbing the peace, and maybe insanity. But when a stranger from outer space visits his cell at midnight and hails him as the Valkar of Katuun. Banning decides that maybe the authorities are right and he is crazy. Because his only alternative is to believe the impossible: that he really is the Valkar of Katuun, exiled emperor of a star empire, and the personality of Neil Banning nothing more than an elaborate fraud.

It doesn't really matter, though, who is right. For Banning finds himself starnapped, on his way to Katuun, whether he likes it or not. And as Banning, or the Valkar, he has to save that star-world from the terror of the Sun Smasher or perish with the loyal subjects he might never even have known!

The Plot Against Earth / Recruit for Andromeda

Ace Double D-Series: Book 358

Calvin M. Knox
Milton Lesser

The Plot Against Earth


The humanoid worlds of the galaxy were alarmed! Somehow, somewhere the mind-destroying hypnojewels were being trafficked in.

An uneasy Earth, newcomer to the ranks of the civilized planets, sent Lloyd Catton to the Interworld Crime Commission on Morilar to investigate. Although the Commission had made little progress until then, after his arrival things started to happen fast.

For it didn't take Catton long to realize that the hypnojewels were but the thin edge of a murderous wedge that was calculated to shove the Earth back again into the helpless isolation of a world returned to savagery

Recruit for Andromeda

Many had gone - none had returned.

Edge of Time / The 100th Millennium

Ace Double D-Series: Book 362

John Brunner
David Grinnell

Edge of Time

They created a miniature universe, but could they control it?

The 100th Millennium

They searched the past to escape the future.

Vanguard from Alpha / The Changeling Worlds

Ace Double D-Series: Book 369

Brian W. Aldiss
Kenneth Bulmer

Vanguard from Alpha

The spy team from Earth knew they were looking for trouble when they secretly landed in Luna Area 101 - dangerous Rosk territory. But the fearless trio got more than they bargained for at the hands of these hostile guests of Earth. Tyne and Murray escaped with their lives. The third man was dead, and Tyne suspected that Murray had murdered him in cold blood.

Ready to confront him with his charge, Tyne discovered that Murray had disappeared somewhere in the banned area. But when he followed him, he discovered something vastly more dangerous than Murray's guilt or innocence--the Rosks threatened imminent invasion of Earth. And only Tyne now held the secret that could deflect their hordes of death.

The Changeling Worlds

On the gold-symbol world of Beresford's Planet, Richard Kirby lived in total luxury. As a member of "The Set" his life was a never-ending round of planetary party-hopping. The only restriction imposed on him - that he never put down on any world marked with a red or black symbol - was something that he had always accepted without question.

That is until his brother Alec was murdered in cold blood! Alec had been an undercover agent to these forbidden planets, and in order to avenge him, Kirby had to find out for himself what was really happening there.

But with the start of his investigation, Kirby found out quickly that the authorities meant business when they said "Hands off!" The secret they were protecting was of vital importance, and it now became a matter of life and death, not only to Kirby, but to all the inhabitants of the Changeling Worlds.

Masters of Evolution / Fire in the Heavens

Ace Double D-Series: Book 375

Damon Knight
George O. Smith

Masters of Evolution

Alvah Gustad was typical of New York City's twenty million citizens. He took for granted such luxuries as synthetic foods and robot-servants, and he knew beyond a doubt that the Cities offered the only acceptable way of life for civilized man.

But roaming the vast plains between the continent's five Cities, ever growing and expanding, were the dreaded tribes of Muckfeet. In direct antithesis to the City dwellers, these illiterate savages actually GREW food and RAISED animals. And how they smelled! It was so bad that Alvah could feel his stomach churn at the mere mention of their name.

There was one thing in the Muckfoot territory that the Cities did need, though-metal ores. And Alvah, faced with the job of liason to the tribes around New York, had to somehow make his patriotism outweigh his nausea. If he succeeded, the Cities would be monuments to eternity; if he failed...

Fire in the Heavens

Race against doomsday!

One Against Herculum / Secret of the Lost Race

Ace Double D-Series: Book 381

Andre Norton
Jerry Sohl

One Against Herculum


Corruption was the rule of order on the domed planetary colony of Herculum. Earthman Alan Demuth, for instance, couldn't get the job he had rightfully qualified for without paying a kickback to the man he hated, Jack Bohannen. Alan thought he could simply report Jack's graft, until he learned none would listen.

There was one desperate recourse. Under provision of the law, Alan could ask for a crime license. His crime would be homicide, and the victim Jack Bohannen. The law gave him twenty-four hours to make good his murder.

Failure would mean Alan's death. Success would mean the clean-up of graft and dishonesty. But Alan never realized that in a graft-ridden society, even a license to kill is liable to prove a backfiring fraud!

Secret of the Lost Race

The Constellation of the Wolf was an area of the galaxy few spacemen wanted to visit, for its sparse worlds were home only to the outcasts of the civilized worlds. But now it had been learned that there was one among its runaway refugees who was more than just a misfit--one who was a definite danger to all humanity.

Echo in the Skull / Rocket to Limbo

Ace Double D-Series: Book 385

John Brunner
Alan E. Nourse

Rocket to Limbo: Lars Heldrigsson was fresh out of the Colonial Service Academy and his first assignment was a milk-run to Vega aboard the *Ganymede. Not a very exciting trip, except that the ship's commander, Walter Fox, had explored and opened more new colony-worlds than any other man.

But the *Ganymede* had hardly blasted off before Lars discovered that not all the crew shared his admiration of their chief. Rumors circulated, rumblings of mutiny were heard, and the news finally broke that they weren't going to Vega at all, but to Wolf IV, the one planet from which no man had returned alive!

Echo in the Skull: Sally Ercott is a disintegrating personality. She finds herself living in filth, abject squalor, with vague memories of a clean, happy, prosperous life which has somehow slipped away.

But, superimposed on those memories are OTHER lives recalled; lives on planets alien beyond comprehension. Lives ended in horror as each world was destroyed by a malignant alien, slimy and ugly, demanding sacrifice. What is happening to this girl's mind?

Siege of the Unseen / The World Swappers

Ace Double D-Series: Book 391

A. E. Van Vogt
John Brunner

Siege of the Unseen


"The crash was over, the car on its side. Slade sprawled dizzily on his back, while something warm trickled from his forehead into his left eye. He wiped it away, and saw with a start that it was blood. The skin was torn raggedly..."

"A third eye was plainly visible. The eyelid of it was closed by a surplus of sticky matter, but abruptly he grew aware that it was pulsing with a vague perception of light..."

At first it was a grotesque discovery, when the accident revealed that young businessman Michael Slade was a bizarre freak -- a man with three eyes. But the impact of what it meant to see with three eyes was even more macabre. For Slade, that shocking third eye was his entry into a strange new dimension of terror and adventure -- a fearful new world that would wrap itself about him forever!

The World Swappers

The inhabited galaxy was caught in the crushing vice of a struggle for power. The political titans of the planets of mankind were making their bids for supremacy.

The contestants: Cornice, man of strange powers, authority in the spheres of the intellect; and Bassett, man of money-power, financial and business wizard.

As the association of human worlds drew near the teetering edge of internal revolutions; one of these men would be in a position to triumph. The only thing that neither side could foresee was that there were Others hovering among the stars, loo ling for new worlds to conquer!

The Mutant Weapon / The Pirates of Zan

Ace Double D-Series: Book 403

Murray Leinster

The Mutant Weapon

The only links between the far-flung space colonies were the Medical Services spaceships. When these lonely travelers paid a call, they were always given a royal welcome. So why did the landing grid on Marix III try to destroy Med Serviceman Calhoun's ship?

The Pirates of Zan

Because Bran Hoddan was a serious electronice engineer, he didn't want any part of his planet's heritage. For he was from Zan -- and Zan's only occupation was spaceship piracy!

We Claim These Stars! / The Planet Killers

Ace Double D-Series: Book 407

Poul Anderson
Robert Silverberg

We Claim These Stars!

All's fair in love and war--and with the galaxy split in conflict between two implacable confederations, anything ought to go. Still, how do you plan the ambush and capture of a tremendously capable telepath?

The intended victim, a weird genius from an uncharted world and the right arm of the enemy's general staff, not only knew everything everyone was thinking nearby, he could also read minds at a distance. So the problem posed to Dominic Flandry, Captain of Terran Intelligence, was a real killer.

To make matters worse, the telepath in question was equally interested in putting Flandry out of commission. The fate of many planets depended on which of the two triumphed.

The Planet Killers

Murder Mission to Betelgeuse IV

It was in wide-eyed horror that Roy Gardner heard the news from the Chief of Security. In just sixty-seven years the Earth would be destroyed by the planet Lurion.

That data had been compiled by the invincible computer. With unwavering faith in the machine, humans had only one thing to do--destroy Lurion first.

And the man for the job was Gardner. If he did it successfully the blood of billions would be on his hands; if he fouled up he would be the worst traitor in Terrestrial history. And not even he knew which course he would pursue when he finally learned that eben the all-wise machine had not known all the right answers.

The Man With Nine Lives / A Touch of Infinity

Ace Double D-Series: Book 413

Harlan Ellison

The Man with Nine Lives

He mastered the maze of the cosmos.

A Touch of Infinity

Collection including the stories:

  • Run for the Stars - (1957)
  • Back to the Drawing Boards - (1958)
  • Life Hutch - (1956)
  • The Sky Is Burning - (1958)
  • Final Trophy - (1957)
  • Blind Lightning - (1956)

Dr. Futurity / Slavers of Space

Ace Double D-Series: Book 421

John Brunner
Philip K. Dick

Dr. Futurity

Jim Parsons is a talented doctor, skilled at the most advanced medical techniques and dedicated to saving lives. But after a bizarre road accident leaves him hundreds of years in the future, Parsons is horrified to discover an incredibly advanced civilization that zealously embraces death. Now, he is caught between his own instincts and training as a healer and a society where it is illegal to save lives.

But Parsons is not the only one left who believes in prolonging life, and those who share his beliefs have desperate plans for Dr.Parsons' skills, and for the future of their society.

Dr. Futurity is not only a thrilling rendition of a terrifying future but it is also a fantastic examination of the paradoxes of time-travel that could only have come from the mind of Philip K. Dick.

Slavers of Space

It was carnival time on Earth. Prosperity was at its peak; science had triumphed over environment; all human needs were taken care of by computers, robots and androids. There was nothing left for humans to do but enjoy, themselves... to seek pleasure where they found it, without inhibitions and without thinking of the price.

Then an android died - in a senseless, brutal murder. And young Derry Horn was shocked out of his boredom and alienation. His life of flabby ease had not prepared him for a fantastically dangerous mission to outlying, primitive stars - but now, at last, he had a reason for living. And even when he found himself a prisoner of ruthless slavers, even when he learned the shocking truth about what the androids really were and where they came from... even when he saw all the laws of the orderly, civilised universe he knew turned upside-down and inside-out... he fought on.

For that universe had to be shattered and reborn - even if Derry Horn and the Earth he had irrevocably left behind died in the process!

To the End of Time and Other Stories / World of the Masterminds

Ace Double D-Series: Book 427

Robert Moore Williams

To the End of Time and Other Stories

Showdown on the sun's last plantet!

World of the Masterminds

Collection of short stories:

  • To the End of Time - (1950)
  • Where Tall Towers Gleam - (1950)
  • Homeward Bound - (1949)
  • When the Spoilers Came - (1952)
  • Like Alarm Bells Ringing - (1947)

Earth's Last Fortress / Lost in Space

Ace Double D-Series: Book 431

A. E. Van Vogt
George O. Smith

Earth's Last Fortress

It looked like a perfectly innocent store front, a volunteer enrollment office for young idealists who wanted to help the desperate forces of a young democracy overseas win their civil war. The young girl who sat at the desk inside was attractive, sympathetic, and would see that you got your passage safely.

Lost in Space

Commodore Ted Wilson's intuition told him right! He should never have let his fiancee, Alice Hemingway, take off on Space Liner 79 - the flight that fate had singled out to change the destiny of the galaxy!

The Sioux Spaceman / And Then the Town Took Off

Ace Double D-Series: Book 437

Richard Wilson
Andre Norton

The Sioux Spaceman

Redskin raiders on the galactic rim.

Kade Whitehawk had two strikes against him in the Space Service. First, he had bungled his assignment on the planet Lodi. Second, he believed all creatures had a right to freedom and dignity - and having such opinions was strictly against the rules.

But when he ws assigned to Khot, he found the Ikkinni there - tortured yet defiant slaves of a vicious tyrant race.

Right then Kade swung the last pitch. For rules or no rules, THE SIOUX SPACEMAN knew that he had to help these strange creatures gain freedom... and that he alone, because of his Indian blood, had the key to win it for them.

And Then the Town Took Off

The town of Superior, Ohio was certainly living up to its name! In what was undoubtedly the most spectacular feat of the century, it simply picked itself up one night and rose two full miles above Earth!

Radio messages simply stated that Superior had seceded from Earth. But Don Cort, stranded on that rising town, was beginning to suspect that nothing was simple about Superior except its citizens. Calmly they accepted their rise in the world as being due to one of their local townspeople, a crackpot professor.

But after a couple of weeks of floating around, it began to be obvious that the professor had no idea how to get them down. So then it was up to Cort: either find a way to anchor Superior, or spend the rest of his days on the smallest - and nuttiest - planet in the galaxy!

Bow Down to Nul / The Dark Destroyers

Ace Double D-Series: Book 443

Brian W. Aldiss
Manly Wade Wellman

Bow Down to Nul

When Earthman Gary Towler is off work, he is a pariah. For his task as chief interpreter for the corrupt and tyrannical nuls makes other humans avoid him as a traitor.

Nor is he trusted by the three-armed mammoth rulers themselves, especially when they learned than an envoy was on the way from their distant planetary headquarters to investigate charges of corruption on Earth. For the leaders realized that Gary knew too much.

When the humans leading the underground rebellion demanded Gary's aid or his life, he was caught between two untrustful forces. And his only way out was to make himself into a one-man third force against two worlds' plotters.

The Dark Destroyers

They brought a new ice age.

The Genetic General / Time to Teleport

Ace Double D-Series: Book 449

Gordon R. Dickson


Title variant of Dorsai!

Donal Graeme was from The Dorsai, a small planet whose major export was well-trained, fearless military mercenaries. On the day he reached adulthood, he was ready to go out among the star systems and make his name. He paused for a moment, pondering the strange, indefinable force that seemed to drive him to his unknown destiny.

Now, after six years of desperate exploits, Donal once again felt that hidden power that no living being could explain.

Time had run out! The great far-flung worlds of Man had played their planetary politics and now their two warring camps wer on the eve of a fantastic final reckoning. Suddenly, now, Donal knew his destiny; that he was the one man among the stars in a position to stop the mechanism behind this suicidal struggle. To do it, he had to tackle the impossible and conquer the invincible!


They called their secret society, simply, *Members of the Human Race,* but the majority of humanity preferred to call them *The Inhumans.* That's because it was generally believed that they were a vicious masked gang of mutators, vivisectionists, and monster-makers.

In fact, it had gotten to the point where the world government, that amazing non-national association of services which had abolished war, was about to outlaw and destroy them. If the government acted-and its spokesman, Anthony Sellars, was ready to-it might be the first armed conflict in nearly a century. But it would be scarcely more than a police action: the entire "respectable" world against a hideout bunch of crackpots.

Except, as Sellars was to find out, how do you go about collaring people who can walk through walls?

The Games of Neith / The Earth Gods Are Coming

Ace Double D-Series: Book 453

Margaret St. Clair
Kenneth Bulmer

The Games of Neit

The people of Gwethym were highly intelligent, rational beings. They worshipped the goddess Neith, not because they believed in such a golden-haired being, but because they recognized the need for religion as a counterbalance to human passions.

So when trouble struck their planet, when they discovered an energy leak which was slowly destroying their world, the Gwethymians turned to science for their answer. If their world was to be saved, the solution must come from the logicians.

Or so they thought, until one day a woman, the image of their goddess Neigh, walked across the waters of the harbor and into their city! Then their trouble was twofold. Would there be anything left to save of their world if they waited for the scientists? And if they didn't, if they put their trust in this goddess whom logic told them could not even exist, would they just be sealing their doom that much quicker?

The Earth Gods Are Coming

The Prophets of Earth slept crated in their thousands.

They filled the ship's bomb-bays, lying quietly waiting in their machine-gleaming metal sheaths.

Each individual one was destined to cover a world.

Each individual one lay there, quiescent in its capsule, awaiting the master command that would send it, after the one before and receding the next in line in strict mathematical order, out over a new and unknown world to plunge down to its destined consummation.

Vulcan's Hammer / The Skynappers

Ace Double D-Series: Book 457

Philip K. Dick
John Brunner

Vulcan's Hammer

After the twentieth century's devastating series of wars, the world's governments banded together into one globe-spanning entity, committed to peace at all costs. Ensuring that peace is the Vulcan supercomputer, responsible for all major decisions. But some people don't like being taken out of the equation. And others resent the idea that the Vulcan is taking the place of God. As the world grows ever closer to all-out war, one functionary frantically tries to prevent it. But the Vulcan computer has its own plans, plans that might not include humanity at all.

The Skynappers

When Ivan Wright stepped out of his mountain cabin, rifle in hand, to investigate the sound of a strange helicopter, he stepped right into the middle of a galactic crisis.

For the crew of that odd aircraft were not men such as he'd ever seen before - and when he tried to oppose them, he found himself hurled uncontrollably into oblivion.

He awoke to find himself considered as a kidnapped barbarian from a backward planet in a galaxy of advanced civilizations - yet one who somehow held in his own hands the key to all their futures!

The Atlantic Abomination / The Martian Missile

Ace Double D-Series: Book 465

John Brunner
David Grinnell

The Atlantic Abomination

Man, meet your master.

The Martian Missile

Pawn of the space invaders.

Sanctuary in the Sky / The Secret Martians

Ace Double D-Series: Book 471

John Brunner
Jack Sharkey

Sanctuary in the Sky

A cold war among the stars was growing hotter by the minute. As Pag and Cathrodyne struggled for domination, a hot war threatened which would rend and annihilate whole planetary systems. The two master races would have consumed one another long ago, but for one single factor:

Waystation. It was a stupendous synthetic world, famed throughout this galaxy. For Waystation was controlled by a neutral people, and until the greater powers could seize this strategic wonder planet and ferret out its secrets, they were doomed to fretful inactivity.

But as a Cathrodyne vessel drew near to Waystation, the all-important balance of power stood in sudden peril. The ship in itself was routine. But on board was a stranger, a man of undiscovered race, who spoke too little, and, it appeared, knew too much...

The Secret Martians

Jery Delvin had a most unusual talent. He could detect the flaws in any scheme almost on sight--even where they had eluded the best brains in the ad agency where he worked. So when the Chief of World Security told him that he had been selected as the answer to the Solar System's greatest mystery, Jery assumed that it was because of his mental agility.

But when he got to Mars to find out why fifteen boys had vanished from a spaceship in mid-space, he found out that even his quick mind needed time to pierce the maze of out-of-this-world double-dealing. For Jery had become a walking bomb, and when he set himself off, it would be the end of the whole puzzle of THE SECRET MARTIANS--with Jery as the first to go!

To the Tombaugh Station / Earthman, Go Home!

Ace Double D-Series: Book 479

Poul Anderson
Wilson Tucker

To the Tombaugh Station

Was his spaceship haunted - or only booby-trapped?

Earthman, Go Home!

Published as an Ace Double book (1960), cover code D-479, two short novels. Cover art by Ed Emshwiller , Ed Valigursky. "To The Tombaugh Station" was first published in "The Magazine of Fantasy and Science Fiction," July 1960. "Earthman, Go Home!" is part of Anderson's "Ensign Flandry" series, and was serialized in Fantastic Stories (December 1960, January 1961) under the title "A Plague of Masters."

This novella is also part of Flandry of Terra (Dominic Flandry #6) as "The Plague of Masters".

The Puzzle Planet / The Angry Espers

Ace Double D-Series: Book 485

Lloyd Biggle, Jr.
Robert W. Lowndes

The Puzzle Planet

Enigma of an unexplored world

Roy Auckland had been asked to join the expedition now on the remote planet Carolus. Despite the fact that he was a communications expert, not an explorer, he was excited about the opportunity to visit an unknown world. But he wondered why he had been requested personally by the head of the expedition.

Once on Carolus, Roy met the weird creatures called the vaec and was immediately intrigued by their mirth-loving nature and their patient devotion to practical jokes.

But was it one of their practical jokes that almost exploded alongside Dr.. James' skull? Or was it a made-on-Earth murder gimmick?

Suddenly, Roy Auckland realized that behind their "native Simplicity" the Vaec were dangerously and subtly deceptive. And he also realized that somehow he had to break through their mask to understand them--or Dr. James would be only the first of the Earthmen to die.

The Angry Espers

Walk on air--or fall in flames!

Slowly the fog of unconsciousness thinned and Paul Corban began to remember. The spaceship had crashed, but first he had called the Galactic Federation Space Navy to report that he was lost...Wait a minute-yes, he had been lost and he had crashed, and...

Now he saw the strange men hovering over him. Doctors? Had they kept him alive? Was he dead? The men vanished; they blinked out of existence! Now, was he dead?

Soon, Paul corban found that he was indeed alive and in his right mind--and that it would have been better for him and the universe if he had died, if he had gone insane, if he had lost him memory. Because the results of his survival could be infinitely disastrous!

The Big Time / The Mind Spider and Other Stories

Ace Double D-Series: Book 491

Fritz Leiber

This Ace Double is almost a complete collection of Leiber's Change War stories, lacking only "A Deskful of Girls", "No Great Magic", "When the Change-Winds Blow", "Knight to Move", and "Black Corridor".

The Big Time [Change War]

Have you ever worried about your memory, because it doesn't seem to recall exactly the same past from one day to the next? Have you ever thought that the whole universe might be a crazy, mixed-up dream? If you have, then you've had hints of the Change War.

It's been going on for a billion years and it will last another billion or so. Up and down the timeline, the two sides -- "Spiders" and "Snakes" -- battle endlessly to change the future and the past. Our lives, our memories, are their battleground. And in the midst of the war is the Place, outside space and time, where Greta Forzane and the other Entertainers provide solace and R&R for tired time warriors.

This novel was also published as a single title.

The Mind Spider and Other Stories

Table of Contents:

  • The Haunted Future - (1959) - novelette
  • Damnation Morning [Change War] - (1959) - short story
  • The Oldest Soldier [Change War] - (1960) - short story
  • Try and Change the Past [Change War] - (1958) - short story
  • The Number of the Beast [Change War] - (1958) - short story
  • The Mind Spider [Change War] - (1959) - short story

Wandl the Invader / I Speak for Earth

Ace Double D-Series: Book 497

Keith Woodcott
Ray Cummings

Wandl the Invader

There were nine major planets in the Solar System, and it was within their boundaries that man first set up interplanetary commerce and began trading with the ancient Martian civilization. And then they discovered a tenth planet - a maverick!

This tenth world, if it had an orbit, had a strange one, for it was heading inwards from interstellar space, heading close to the Earth-Mars spaceways, upsetting astronautic calculations and raising turmoil on the two inhabited worlds.

But even so none suspected then just how much trouble this new world would make. For it was WANDL THE INVADER and it was no barren planetoid. It was a manned world, manned by minds and monsters and travelling into our system with a purpose beyond that of astronomical accident!

I Speak for Earth

'One citizen of your planet shall go to the capital of the Federation of Worlds. He shall live there for thirty days. If your representative can survive and demonstrate his ability to exist in a civilized society with creatures whose outward appearance and manner of thinking differ from his own, you will pass the test. You will be permitted to send your starships to other planets of the galaxy.

'If he fails the test, if prejudice, fear, intolerance or stupidity trip him up, then you world will be sealed of from the stars for ever!'

This was the ultimatum from space. The task before the world then was - who shall go? What man or woman could be found to take this frightening test for the whole of humanity and be certain not to fail?

Beyond the Silver Sky / Meeting at Infinity

Ace Double D-Series: Book 507

John Brunner
Kenneth Bulmer

Beyond the Silver Sky

Keston Ochiltree's visit home had been short and disastrous. His newborn nephew had proved to be one of the Hopeless Ones and had only served to remind him of the present plight of mankind. Keston knew that the decision he was being called on to make might mean a new start for humanity or the end of their underwater civilization.

Each day found more Hopeless Ones being born: pitiful creatures with webbed hands and feet. More important, the inhuman Zammu were pressing their attack in a fierce struggle between species. Most important, the silver sky was lowering. The shimmering sky-level would soon shrink until they had all burned in the gaseous beyond.

So Keston's decision might mean everything. Should he stay in the Emperor's shark-cavalry to fight the Zammu? Or should he join Professor Lansing in an illegal attempt to find what lay beyond the silver sky?

Meeting at Infinity

Allyn Vage was once a beautiful woman, but due to an accident - which may have been a murder attempt - she was now a hopeless cripple, burned and disfigured and without the senses of sight, hearing, smell, taste and touch. When they brought her to Jome Knard, that noted physician had no choice but to employ a certain apparently miraculous device, incomprehensible even to him, to keep her immobile body alive and to restore and regulate her sensory perception.

This strange machine had been imported from a seemingly primitive people on the world of Akkilmar. They had allowed it to be exported, but there was something about it they couldn't - or wouldn't - explain.

Little did either the doctor or his patient realize that between them they had now become the lever that could topple a world!

Star Hunter / The Beast Master

Ace Double D-Series: Book 509

Andre Norton

Star Hunter

Somewhere on the jungle world of Jumala hid a man whose mind had been reconditioned with another's brain pattern. There was a fabulous reward out for him - and so began an other-worldly game of hide-and-seek, between a man who did not know his own powers and an interstellar safari that sought something no man had a right to find.

The Beast Master

Left homeless by the war that reduced Terra to a radioactive cinder, Hosteen Storm - Navaho commando and master of beasts - is drawn to the planet Arzor, to kill a man he has never met. On that dangerous frontier world, aliens and human colonists share the land in an uneasy truce. But something is upsetting the balance, and Storm is caught in the middle. He had thought the war was over - but was it?

Bring Back Yesterday / The Trouble with Tycho

Ace Double D-Series: Book 517

Clifford D. Simak
A. Bertram Chandler

Bring Back Yesterday

Second Officer John Peterson is finished as far as the Galactic clippers are concerned. Branded a deserter, stranded on Carinthia and desperate for a job, there are few places left to go. Private detective Steve Vynalek needs Petersen. Has a fanatical scientist on the planet Wenceslaus really found a way to beat the time travel problem, a way to bring back yesterday?

The Trouble with Tycho

A Treasure Hunt in a Haunted Crater

Prospecting on the Moon was grim, dangerous and usually unrewarding. Only most of the greenhorns who came to try didn't find out until after they got there.

Chris Jackson was no exeption. He put everything he owned and could borrow into this, and he'd be ruined if he failed.

His only chance meant going into Tycho - where three expeditions had already disappeared. He could try... but would he come out again...?